Water-change-free floating snail culture device

The utility model discloses a floating snail culture device free of water change. The floating snail culture device comprises a hollow cylindrical culture main pipe, a plurality of sections of connecting pipes, two hoses, two ball valves, two aeration pipes, a container, an oxygenation pump, a submersible pump, a three-way valve and a supporting base. The two top ends of the breeding main pipe areeach provided with one or more connecting pipes, and the other ends of the connecting pipes are connected with the hose. The two hoses are a water inlet pipe and a water outlet pipe respectively, andeach hose is provided with a ball valve. And a three-way valve is arranged at the ball valve of the water inlet pipe. Two aeration pipes are fixedly arranged on the inner side of the bottom end of the main culture pipe and connected with a ball valve of the water inlet pipe through a three-way valve. The oxygenation pump is connected with a ball valve of the water inlet pipe through a pipeline, and the other end of the wa